sensors Mode-S transponder

A0DAE2

ICAO 24-bit transponder address · allocated to United States

Currently assigned to N154UW · AIRBUS A-321 · operated by AMERICAN AIRLINES INC

Hex
A0DAE2
Octal
50155342
Decimal
10,541,794
Country
US
Tail
N154UW
Type
A321
Transponder active on ground
Flights observed
8
Distinct callsigns
4
Country
US
Last broadcast
23h ago

Last known position

Most recent position reported by Mode-S A0DAE2.

Country allocation

The ICAO 24-bit address A0DAE2 falls within the block assigned to United States (US) by ICAO Annex 10, Volume III. Every aircraft registered in United States receives a permanent address from this block at the time of registration; the address stays with the airframe even if the aircraft is re-registered to a different operator within the country.

Callsign history 4 distinct

Callsign Airline Flights Last seen
AAL595 American Airlines 3 2026-04-13
AAL1580 - 3 2026-04-13
AAL2226 American Airlines 1 2026-04-12
AAL1198 American Airlines 1 2026-04-13

Recent flights last 8

DateFlightRouteTakeoffLandingDuration
2026-04-13 AAL595 DFW → MSN Apr 13, 21:55 UTCApr 13, 23:45 UTC1h 50m
2026-04-13 AAL595 DFW → MSN Apr 13, 19:50 UTCApr 13, 20:45 UTC55m
2026-04-13 AAL595 DFW → MSN Apr 13, 19:05 UTCApr 13, 20:10 UTC1h 5m
2026-04-13 AAL1198 SFO → DFW Apr 13, 12:44 UTCApr 13, 15:45 UTC3h 1m
2026-04-13 AAL1580 - Apr 13, 04:20 UTCApr 13, 06:45 UTC2h 25m
2026-04-13 AAL1580 - Apr 13, 03:55 UTCApr 13, 06:45 UTC2h 50m
2026-04-13 AAL1580 - Apr 13, 01:25 UTCApr 13, 04:15 UTC2h 50m
2026-04-12 AAL2226 DFW → PHL Apr 12, 17:15 UTCApr 12, 20:05 UTC2h 50m

About Mode-S

A Mode-S transponder code (also called an "ICAO 24-bit address" or "hex code") is a 6-character hexadecimal identifier permanently assigned to an aircraft when it's first registered. Unlike callsigns (which change with each flight) or registrations (which can change if an aircraft is sold internationally), the Mode-S address stays with the airframe for the life of the aircraft in that country.

Every ADS-B transmission from an aircraft includes its Mode-S address, making it the most reliable way to identify a specific airframe. Flight-tracking services like Apparatus use the Mode-S address as the primary key for tying position broadcasts, callsigns, and ownership records together.

Prefer a tail-number view? See the N154UW page for operator, model, and routing details .

Mode-S A0DAE2 frequently asked

What is Mode-S code A0DAE2?
A0DAE2 is an ICAO 24-bit transponder address. Allocated to United States. Assigned to N154UW.
Where is Mode-S A0DAE2 registered?
Mode-S code A0DAE2 is allocated to United States (US). All aircraft registered there receive a Mode-S address from a fixed block defined by ICAO Annex 10.
Is A0DAE2 broadcasting right now?
Mode-S A0DAE2 is currently broadcasting from the ground.
Hex, octal, and decimal Mode-S codes: what's the difference?
The same 24-bit identifier expressed in different bases: hex A0DAE2, octal 50155342, decimal 10,541,794.
What flights does A0DAE2 operate?
Mode-S A0DAE2 has broadcast 4 distinct callsigns, including AAL595, AAL1580, AAL2226, AAL1198.